Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Trump Says He Has Constitutional Obligation to Investigate Biden on Corruption Steve Heman Wayne Lee contributed to this report. WHITE HOUSE -- U.S. President Donald Trump, in his latest remarks explaining his requests to foreign governments to investigate his political opponents, is asserting he has a constitutional duty to fight corruption. "This is not about politics. This is about corruption. If you look and read our Constitution and many other things, I have an obligation to look at corruption," Trump said to reporters on Friday at the White House. .